Hello,
New here. My right channel sounds lower in volume compared to the left channel. I've ruled out the speakers since I switched everything and was able to replicate the issue but opposite. The best way I can describe it is theres a little less highs and less rumble in the right channel. I recently had work done on it but they couldn't solve the issue. Anyone have a similar problem?
New here. My right channel sounds lower in volume compared to the left channel. I've ruled out the speakers since I switched everything and was able to replicate the issue but opposite. The best way I can describe it is theres a little less highs and less rumble in the right channel. I recently had work done on it but they couldn't solve the issue. Anyone have a similar problem?
As this amplifier is over 35years old, I would replace the electrolytic capacitors as a matter of course and clean/replace the controls if scratchy.
I actually had capacitors replaced in that channel which they said fixed the problem but it didn't do the trick. Any tips on if they should've replaced specific capacitors related to this issue?
Only the electrolytics, nothing specific.
With a mono two channel input, is the problem still there?
If you temporarily inject a signal on C501/601, is the matter then resolved? That proves the amplifiers.
If the mono is switched in and that doesn't resolve the issue and you have equal sound with signal injected on C501/601 then the problem is possibly either the volume control or balance control.
With a mono two channel input, is the problem still there?
If you temporarily inject a signal on C501/601, is the matter then resolved? That proves the amplifiers.
If the mono is switched in and that doesn't resolve the issue and you have equal sound with signal injected on C501/601 then the problem is possibly either the volume control or balance control.
Yes, that was the other test I ran. Same things happens. If I put it in the mono, the volume is still lower. Not sure what that is you're referring to in regards to the C501/601?
C501/601 are the coupling capacitors feeding the front end of the power amplifiers. If you input equal signal, through a 10u 25volt capacitor, on the +ve side of the capacitors, you will find out if the amplifiers are at fault or the vol control section is at fault. Those capacitors should be new.
On many receivers I see sometimes one channel gets stuck in the "loudness" mode due to a bad/dirty loudness switch. That would explain why the right channel sounds weaker, less highs and less rumble. This means the left channel is the channel with a problem, stuck in "loudness" mode. Easy to check with a square wave and an o'scope.
Craig
Craig
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